How to Format Raid 0, 1+0 or 5 (ML350 G5).

Got a problem where I need to format all 6 of the ML350 G5 hard disks which can be set in a Raid 0. 1+0 or 5 config.

I've tried doing this though Linux by using GParted but it throws up errors.
I've also tried using KillDisk but each hard disk takes 5 hours for just 1 pass.
I've also tried using the Windows 2008 Server CD and I have failed.

I could really use the help because I am trying to keep a job which could lead to a work placement for a computer hardware related apprentiship.

I have lots of desktop experience but relatively little server experience.